Lathe dog



V. T. JULlN.

LATHE DOG.

APPLICATION FILED ocr. 6.1921.

1,425,862. Q PatentedA11g.15,1922.

way 1 M W'QQMWJW VICTOR 'IEODOR JULIN, OF DJ'URSHOLMS-DANDERYD, SWEDEN.

LATHE DOG.

citizen of Sweden, residing at Djursholms- Danderyd, Sweden, have invented certain new and useful Improvements in Lathe Dogs (for which I have filed applications in Sweden, May 5, 1919 and Germany June 7, 1921), of which the following is a specification.

The present invention relates to a driver, to be used in lathes and the like, and the novel feature of the same consists therein, that the driver can be applied and removed by a simple manipulation, whereby the work piece .to be brought within the rotation, is firmly secured.

On the drawing Fig. 1 is a longitudinal section of the driver, and Fig. 2 an elevation of the same.

The driver is formed like a pair of pipe tongs, and consists of three parts, viz, a main body a a press member 5, adjustably secured to said main body and a spring actuated eccentric lever c. The body a and the press member 6 form an angular support or abutment, against which the work piece t is pressed. The adjustable member Z) may be secured in position on the body a by means of the nut 62 on a screw d, going through a slot f in the body a. The head i of the screw (Z is provided with teeth, engaging corresponding teeth It on the body (1 The member 7) has a projecting bolt 2, engaging the slot f and serving as a guide for the member 6, when being moved or adjusted in said slot f.

The end of the body a opposite to the press member 7) is, provided with two projecting legs forming a fork, and, the eccentric lever c is mounted on a pivot'post m between said fork legs. A bow shaped spring 0 abuts against the lever c and is wound on a bolt a, which is inserted between the legs g, abutting with its free ends against the body on. Opposite to the fork legs 9 the end of the body (6 is formed with a. short arm .9, serving as a stop for the thumb of the hand, with which the lever c is grasped when applying or removing the driver against the action of the spring 0.

The work piece If is heldbetween the curved surface 6, which preferably may be rough, of the press member Z), and the eccen- Specification of Letters Patent. Patented Aug, 15, 1922, Application filed October 5', 1921.

Serial No. 505,933.

tric surface 0' of the lever c by means of the pressure of the spring 0 after that said press.

member I) has been suitably positioned and secured on the main body a. A driving bolt a abuts and presses against the lever 0 in the direction of the arrow, with the same action as the spring 0, and assists in clamping the driver firmly against the work piece 6.

Having now particularly described my invention and in what manner the same is to be performed, I claim as my invention:

1. A lathe dog comprising, a main body having a longitudinal slot, a press member, means for adjusting said press member relatively to said main body, said means comprising a screw extending through said press .member and through the aforesaid slot, a

head carried by said screw and engaging said main body, and a lever mounted on said main body and provided with an eccentric surface.

2. A lathe dog comprising, a main body adapted to engage the opposite side of the work piece.

8. A lathe dog comprising, a main body side of. the work piece opposite to the one engaged by the aforesaid press member.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

VICTOR TEODOR JULIN.

Witnesses:

FELIX SFANSEN, HJORDES SEEFFEL. 

